[llvm-bugs] [Bug 32767] New: JIT time is incredibly slow for the following bytecode on Windows 10 with AMD Ryzen R7 1700X
llvm-bugs at lists.llvm.org
Mon Apr 24 06:14:36 PDT 2017
Bug ID: 32767
Summary: JIT time is incredibly slow for the following bytecode
on Windows 10 with AMD Ryzen R7 1700X
Component: new bugs
Assignee: unassignedbugs at nondot.org
Reporter: bique.alexandre at gmail.com
CC: llvm-bugs at lists.llvm.org
Created attachment 18338
Problematic LLVM IR
I'm a Bitwig Studio developer (www.bitwig.com), and we use LLVM to JIT some
digital signal processing algorithms. Our software is used by thousand of
customers on Windows, Mac and Linux.
We just updated from LLVM 3.9.1 to LLVM 4.0 and found that it takes a lot of
time to JIT the attached LLVM IR (48701ms) on AMD Ryzen R7 1700X, while it is
not noticeable on other architectures.
The command "opt -mcpu=znver1 /home/abique/downloads/claes-cache-entry.ll -o
tutu.bc -O3" is instant, so it is slow in the target lowering or in the JIT
By the way, do you have a workaround for this issue until the fix is released?
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